1191944283911 has 2 divisors, whose sum is σ = 1191944283912. Its totient is φ = 1191944283910.

The previous prime is 1191944283883. The next prime is 1191944283979. The reversal of 1191944283911 is 1193824491911.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1191944283911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1191944283311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 595972141955 + 595972141956.

It is an arithmetic number, because the mean of its divisors is an integer number (595972141956).

Almost surely, 2^{1191944283911} is an apocalyptic number.

1191944283911 is a deficient number, since it is larger than the sum of its proper divisors (1).

1191944283911 is an equidigital number, since it uses as much as digits as its factorization.

1191944283911 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 559872, while the sum is 53.

The spelling of 1191944283911 in words is "one trillion, one hundred ninety-one billion, nine hundred forty-four million, two hundred eighty-three thousand, nine hundred eleven".